CN110231764B - Method for manufacturing diamond-polished setting block for timepiece - Google Patents
Method for manufacturing diamond-polished setting block for timepiece Download PDFInfo
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- CN110231764B CN110231764B CN201910167376.4A CN201910167376A CN110231764B CN 110231764 B CN110231764 B CN 110231764B CN 201910167376 A CN201910167376 A CN 201910167376A CN 110231764 B CN110231764 B CN 110231764B
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- timepiece
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- facets
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000003754 machining Methods 0.000 claims abstract description 18
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 11
- 239000010432 diamond Substances 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 230000000284 resting effect Effects 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001075 Nivarox Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/12—Selection of materials for dials or graduations markings
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0074—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment
- G04D3/0092—Watchmakers' or watch-repairers' machines or tools for working materials for treatment of the material, e.g. surface treatment for components of the time-indicating mechanism, e.g. dials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/50—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground, e.g. strings
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B19/00—Indicating the time by visual means
- G04B19/06—Dials
- G04B19/10—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial
- G04B19/103—Ornamental shape of the graduations or the surface of the dial; Attachment of the graduations to the dial attached or inlaid numbers
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
- G04D3/0043—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms
- G04D3/0051—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the time-indicating mechanisms for time markers
-
- G—PHYSICS
- G04—HOROLOGY
- G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
- G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
- G04D3/02—Lathes, with one or more supports; Burnishing machines, with one or more supports
- G04D3/0227—Lathes, with one or more supports; Burnishing machines, with one or more supports for the manufacture of special components for clockworks
- G04D3/0272—Lathes, with one or more supports; Burnishing machines, with one or more supports for the manufacture of special components for clockworks for components of the time-indicating mechanism, e.g. dials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
- Electric Clocks (AREA)
- Adornments (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Method for manufacturing a tessera (100) for a timepiece, comprising a visible upper surface (10), a lower surface (2) for resting on a dial or structure of the timepiece, and at least one foot (3) projecting from said lower surface (2) for attachment to the dial or structure, according to which, providing a profile or bar (1) in a first operation and machining a blank of the foot (3) and the lower face (2) in said profile or bar (1), then cutting said profile or rod (1) in a second operation and then re-working said upper surface (10) with at least one final diamond polishing operation, wherein during said first operation at least two machining operations are carried out in a crossed manner to form a blank having each foot (3) with a polygonal profile comprising a plurality of facets (4; 5; 6; 7).
Description
Technical Field
The invention relates to a method for manufacturing a setting block for a timepiece, comprising an upper surface for viewing by a user, a lower surface for resting on a dial or on a structure of the timepiece, and at least one leg projecting from the lower surface for attachment to the dial or to the structure, according to which, in a first operation, a profile (bar) or a bar (bar) is provided, a blank of the leg and of the lower surface is machined from the profile or bar, then in a second operation the profile or bar is cut, and then the upper surface is reworked using at least one final diamond finishing operation.
The invention also relates to a timepiece dial comprising at least one tesserae block produced by this method.
The invention also relates to a timepiece comprising at least one such dial and/or structure carrying at least one tesseral block manufactured by this method.
The present invention relates to the field of external timepiece components and display functions.
Background
Timepiece blocks are essential elements of timepieces, in particular watches, which contribute to giving them a particular appearance. They must therefore be manufactured with great care, with good reproducibility and without any surface finish defects. The perfect process is difficult to achieve due to the very small size of these aesthetic parts and the difficulty in grasping them. Therefore, the rejection rate may be high. Manufacturing is even more complicated when the lettering block is bent or curved to accommodate the curves of a dial, flange or plate and does not have a flat reference surface.
Placing the tesserae on a support such as a dial or the like also requires special precautions to ensure perfect angular orientation, since any orientation defects, even the smallest ones, are immediately visible. Therefore, precise manufacturing of the legs is crucial.
European patent EP 3220208 in the name of NIVAROX FAR SA discloses an economical method for manufacturing a timepiece display or pointer member, according to which method, for the manufacture of each visible outer surface, a coating material is chosen, such as an amorphous metal alloy or a nanocrystalline structure alloy or an alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium, a first tool is used for manufacturing from the coating material a thick hollow blank having a thickness greater than 20 microns with a first cavity for housing a frame (frame) having an excess thickness with respect to each outer visible surface, for the manufacture of the frame an inner material is chosen, the frame is manufactured and connected to this first cavity, and at least one remaining outer visible surface is diamond tooled, thereby removing all or part of the excess thickness from the blank.
European patent EP 3220209 in the name of NIVAROX FAR SA discloses an economical method for manufacturing a timepiece display or pointer member, according to which a first material is selected which is easy to shape or machine, from which a bar is made, a second material is selected for each outer surface of the member, which is an amorphous metal alloy or an alloy of nanocrystalline structure, or comprises nickel or nickel phosphorus (alloy), or is a pure metal or an alloy of gold and/or silver and/or copper and/or rhodium and/or titanium and/or aluminium, the bar being covered, at least on the surface of the member intended to remain visible, with a thick layer consisting of the second material, having an initial thickness greater than 20 microns; and performing diamond tooling on at least one of the outer surfaces to remove all or part of the thick layer.
Disclosure of Invention
The present invention proposes to define a method for manufacturing a mosaic block which ensures perfect subsequent positioning of the mosaic block on its support.
To this end, the invention relates to a method for manufacturing a tesserae block comprising an upper surface for viewing by a user, a lower surface for resting on a structure of a timepiece, and at least one foot projecting from said lower surface for attachment to said structure, according to which, in a first operation, a bar is provided and in said bar a blank of said foot and of said lower surface is machined, then in a second operation said bar is cut and then said upper surface is reprocessed with at least one final diamond finishing operation, wherein, during said first operation, at least two machining operations are performed in a crossed formation to form a blank of each of said feet having a polygonal profile comprising a plurality of facets, wherein, after forming said polygonal profile and before performing said final diamond finishing operation, each of said feet is journalled to form a substantially cylindrical surface, this surface can be used directly to attach the block to a support in a timepiece, and wherein a front groove is formed during the journal machining of each of the legs, the front groove being arranged to receive any burrs or lips when the block is fitted to the structure.
The invention also relates to a timepiece dial comprising at least one tesserae block produced by this method.
The invention also relates to a timepiece comprising at least one such dial and/or structure carrying at least one tesseral block manufactured by this method.
More particularly, the timepiece is a wristwatch.
Drawings
Other features and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:
figure 1 shows a schematic side view of a bar, at the end of which a front first machining operation is performed.
Fig. 2 shows, in a similar manner to fig. 1, the same bar, which, viewed in the direction of arrow F in fig. 1, is rotated by 90 ° about its longitudinal axis and on which a second, front machining operation is carried out perpendicular to the preceding operation, the dashed line representing the preceding cutting zone.
Figure 3 is a cross-sectional view in the plane of the page of figure 2.
Fig. 4 is an end view of the same bar, along the arrow S of fig. 3, showing two polygonal legs, here with four sides, as a result of the first and second machining operations performed crosswise.
FIG. 5 is an end detail view showing the journal machining (jounaling) of two legs, the left to the thickness of the face from which the legs protrude and the right to the median height.
Fig. 6 is a sectional view similar to fig. 3 through the left foot of fig. 5 and showing the rotational clearance around the journalled foot.
Figure 7 is a cross-sectional view of a tool for performing the operation of figure 1.
Figure 8 is a cross-sectional view of a tool for performing the operation of figure 2.
Fig. 9 shows a sectional view of the positioning of the block blank produced in this way in a reworking tool after cutting, in which the lower face and the feet of the block blank have been completed, and in which the blank is held by its feet and rests against the lower face.
Fig. 10 shows a view similar to fig. 9 of a blank held in a jig for reworking.
Fig. 11 shows a schematic front view of a dial comprising various cut-outs for receiving the feet of a circular or quadrangular tesserae, and V-shaped symbol tesserae mounted in place.
Fig. 12 shows a schematic front view of a watch comprising an annular structure comprising a cut-out similar to the dial of fig. 11 and, in the seven o' clock position, a dial similar to fig. 11.
Detailed Description
The invention relates to a method for manufacturing a timepiece movement 100.
"applique" refers to any display or decorative element intended to be viewed by a user, such as symbols, hour marks, numbers, logos (logo), combinations of letters (monogram), etc., placed on objects, particularly dials, flange pieces, plates, bridge plates, etc.
Such a block 100 generally has an upper face 10 intended to be seen by a user and a lower face 2 intended to rest on the dial or (other) structure of a timepiece.
If the lower face 2 can be directly joined to such a dial or such a structure, it usually has at least one foot 3. Each foot 3 protrudes from the lower face 2 and, more particularly but not exclusively, protrudes in space in a particular orientation with respect to the lower face 2, in order to be fixed to the dial or to the structure.
The method of the invention comprises the following steps:
in a first operation, a profile or bar 1 is provided, in which profile or bar 1 blanks of the feet 3 and of the lower face 2 are machined,
then, in a second operation, cutting the profile or bar 1,
then, using at least one final diamond polishing operation, to rework the upper surface 10.
According to the invention, in a first operation, at least two machining operations are carried out in an intersecting manner to produce a blank of each foot 3 having a polygonal profile with facets 4, 5, 6, 7.
More particularly, after forming the polygonal profile and before performing the final diamond-polishing operation, at least one leg 3, and preferably each leg 3, is journalled to produce a substantially cylindrical surface 8, which surface 8 can be used directly to fix the block 100 to a support in a timepiece.
More particularly, during the journal machining of at least one leg 3, more particularly of each leg 3, a front groove 89 is formed, which front groove 89 is arranged to receive any burrs or lips when the setting block 100 is fitted to the dial or (other) structure in a press-fit or interference-fit manner.
More particularly, the journal machining operation is performed during a first operation prior to the cutting operation.
In one particular embodiment of the invention, during the first operation, a finishing operation is performed on the lower surface 2. More particularly, the lower surface 2 is made curved.
In fact, the advantage of the invention is to obtain feet that are parallel over their entire length, even if the lower surface 2 is curved, or generally has any shaped profile.
More particularly, the finishing operation of the lower surface 2 is performed by diamond polishing.
In a particular embodiment of the invention shown in the drawings, during the first operation, the two machining operations are performed crosswise at 90 ° with respect to each other.
It will be understood that the journal machining operation makes it possible to obtain a foot 3 of a circular, in particular cylindrical, shape of a common type. However, the blank forming the foot 3 by cross-working, which has the shape of a polygonal foot comprising a plurality of facets, also provides an inherent orienting surface for the unique and precise angular orientation of the tesserae block 100, which the tesserae block 100 comprises on a support in a timepiece.
The invention also relates to a method of manufacturing a timepiece structural assembly including at least one piece 100 and at least one structure 301, the piece 100 having a polygonal profile including a plurality of facets 4, 5, 6, 7, manufactured by the above method, said structure 301 being arranged to receive at least one such piece 100. According to the invention, at least one polygonal opening 302 is formed in the structure 301, which polygonal opening 302 is arranged to cooperate with a foot 3 having a polygonal profile comprising a plurality of facets 4, 5, 6, 7, thereby ensuring a precise angular orientation of the associated mosaic block 100 comprising the foot 3, and/or at least one circular opening 303 is formed in the structure 301, which circular opening 303 is arranged to receive and grip a foot 3 having a polygonal profile comprising a plurality of facets 4, 5, 6, 7 at a junction between its facets, and to press each foot 3 into such a polygonal opening 302 or such a circular opening 303.
More particularly, at least one of said structures 301 is made in the form of a bare dial 200, the bare dial 200 being arranged to receive at least one such mosaic block 100 and forming on the bare dial 200 at least one polygonal opening 201, the polygonal opening 201 being arranged to cooperate with a foot 3 having a polygonal profile comprising a plurality of facets 4, 5, 6, 7, so as to ensure a precise angular orientation of the mosaic block 100 comprising the foot 3, and/or forming on the bare dial 200 at least one circular opening 202, the circular opening 202 being arranged to receive and grip the foot 3 having a polygonal profile comprising a plurality of facets 4, 5, 6, 7 at the junction between its facets.
More particularly, said structural assembly is made with at least one of said tesserae blocks 100 comprising a single one of said polygonal legs 3.
At present, electroerosion, laser or other machining techniques make it possible to make such non-circular openings, which previously could only be made using drilling tools, and which are difficult to form accurately by stamping, in particular for supports intended to be glazed or to have any type of coating applied.
The invention also relates to a timepiece 300 comprising at least one such structure 301 carrying at least one such insert 100 produced according to the method of any one of the variants described above, and/or at least one such bare dial 200 carrying at least one such insert 100.
More particularly, the timepiece 300 is a wristwatch.
Claims (9)
1. A method of manufacturing a tessera (100) for a timepiece, the tessera (100) comprising an upper surface (10) for viewing by a user, a lower surface (2) for resting on a structure of a timepiece, and at least one foot (3) projecting from said lower surface (2) for attachment to said structure, according to which a bar (1) is provided in a first operation, and blanks of said foot (3) and of said lower surface (2) are machined in said bar (1), then said bar (1) is cut in a second operation, then said upper surface (10) is reprocessed with at least one final diamond finishing operation, characterized in that at least two machining operations are performed in a crossed formation during said first operation to form a blank of each of said feet (3) having a polygonal profile comprising a plurality of facets (4; 5; 6; 7),
wherein, after forming said polygonal profile and before performing said final diamond polishing operation, each of said legs (3) is journalled to form a substantially cylindrical surface (8) which can be used directly for attaching said setting block (100) to a support in a timepiece,
wherein during the journal machining of each of the legs (3) a front groove (89) is formed, the front groove (89) being arranged to receive any burrs or lips when the block (100) is fitted to the structure.
2. Method for manufacturing a case block for a timepiece according to claim 1, wherein the journal machining of each of the legs (3) is performed during the first operation before the cutting operation.
3. Method for manufacturing a block for a timepiece according to claim 1, wherein during the first operation a finishing operation is performed on the lower face (2).
4. A method of manufacturing a block for a timepiece according to claim 3, wherein the lower face (2) is made curved.
5. A method of manufacturing a setting block for a timepiece as claimed in claim 3, characterized in that the finishing operation on the lower surface (2) is performed by diamond polishing.
6. A method of manufacturing a setting block for a timepiece as claimed in claim 1, wherein during the first operation, the two machining operations are performed in a manner so as to cross each other at 90 °.
7. A method of manufacturing a clockwork assembly comprising at least one block (100) with legs having a polygonal profile comprising a plurality of facets (4; 5; 6; 7), made according to the method of claim 1, and at least one structure (301) arranged to receive at least one of said blocks (100), characterized in that at least one polygonal opening (302) is formed in said structure (301), said polygonal opening (302) being arranged to cooperate with said leg (3) having a polygonal profile comprising a plurality of facets (4; 5; 6; 7), so as to ensure a precise angular orientation of said block (100) comprising said leg (3); and/or forming at least one circular opening (303) in the structure (301), the circular opening (303) being arranged to receive and grip the feet (3) at a junction between facets of the feet (3) having a polygonal profile comprising a plurality of facets (4; 5; 6; 7), and pressing each foot (3) into the polygonal opening (302) or the circular opening (303).
8. Method for manufacturing a horological structural assembly according to claim 7, characterized in that at least one of said structures (301) is manufactured in the form of a bare dial (200), said bare dial (200) being arranged to receive at least one of said tesserae (100) and forming on said bare dial (200) at least one polygonal opening (201), said polygonal opening of said bare dial (200) being arranged to cooperate with said foot (3) having a polygonal profile comprising a plurality of facets (4; 5; 6; 7) so as to ensure a precise angular orientation of said tesserae (100) with said foot (3); and/or forming at least one circular opening (202) on the bare disc (200), the circular opening of the bare disc (200) being arranged to receive and grip the foot (3) at a junction between facets of the foot (3) having a polygonal profile comprising a plurality of facets (4; 5; 6; 7).
9. Method of manufacturing a clockwork assembly according to claim 7, characterized in that it is made to comprise at least one said case piece (100) having a single polygonal foot (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18160212.9A EP3537225B1 (en) | 2018-03-06 | 2018-03-06 | Method for manufacturing diamond polished marks for a timepiece |
| EP18160212.9 | 2018-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110231764A CN110231764A (en) | 2019-09-13 |
| CN110231764B true CN110231764B (en) | 2022-03-22 |
Family
ID=61580987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910167376.4A Active CN110231764B (en) | 2018-03-06 | 2019-03-05 | Method for manufacturing diamond-polished setting block for timepiece |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20190278230A1 (en) |
| EP (1) | EP3537225B1 (en) |
| JP (1) | JP6872574B2 (en) |
| CN (1) | CN110231764B (en) |
| CH (1) | CH714722A2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3913444A1 (en) * | 2020-05-18 | 2021-11-24 | Universo S.A. | Method for manufacturing clock components for timepieces |
| EP4279998A1 (en) * | 2022-05-16 | 2023-11-22 | Universo S.A. | Method for cutting brackets for the field of clockmaking |
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| CN2872435Y (en) * | 2006-01-26 | 2007-02-21 | 李明渊 | Clock dial |
| EP3220209A1 (en) * | 2016-03-14 | 2017-09-20 | Nivarox-FAR S.A. | Economical timepiece display component |
| EP3220208A1 (en) * | 2016-03-14 | 2017-09-20 | Nivarox-FAR S.A. | Economical timepiece display component |
| CN206748265U (en) * | 2016-12-15 | 2017-12-15 | 尼瓦洛克斯-法尔股份有限公司 | The manufacture of block is inlayed for clock and watch and is packed for bogey and automatic production device |
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| US2606418A (en) * | 1948-02-24 | 1952-08-12 | Fluckiger & Cie | Indicia retaining means for timepiece dials |
| US2761198A (en) * | 1952-10-02 | 1956-09-04 | Stern Charles | Method for producing time-indicating elements |
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2018
- 2018-03-06 CH CH00271/18A patent/CH714722A2/en unknown
- 2018-03-06 EP EP18160212.9A patent/EP3537225B1/en active Active
-
2019
- 2019-02-14 US US16/275,801 patent/US20190278230A1/en active Pending
- 2019-02-20 JP JP2019028198A patent/JP6872574B2/en active Active
- 2019-03-05 CN CN201910167376.4A patent/CN110231764B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648792A (en) * | 2004-01-26 | 2005-08-03 | 尼瓦洛克斯-法尔股份有限公司 | Method for manufacturing hour-symbols and installation for implementing the same |
| CN2687721Y (en) * | 2004-03-22 | 2005-03-23 | 高金妹 | Watch second hand and second steel shaft connecting structure |
| CN2872435Y (en) * | 2006-01-26 | 2007-02-21 | 李明渊 | Clock dial |
| EP3220209A1 (en) * | 2016-03-14 | 2017-09-20 | Nivarox-FAR S.A. | Economical timepiece display component |
| EP3220208A1 (en) * | 2016-03-14 | 2017-09-20 | Nivarox-FAR S.A. | Economical timepiece display component |
| CN206748265U (en) * | 2016-12-15 | 2017-12-15 | 尼瓦洛克斯-法尔股份有限公司 | The manufacture of block is inlayed for clock and watch and is packed for bogey and automatic production device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6872574B2 (en) | 2021-05-19 |
| JP2019158874A (en) | 2019-09-19 |
| CN110231764A (en) | 2019-09-13 |
| US20190278230A1 (en) | 2019-09-12 |
| CH714722A2 (en) | 2019-09-13 |
| EP3537225B1 (en) | 2020-10-28 |
| EP3537225A1 (en) | 2019-09-11 |
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